Articles | Volume 13, issue 8
Clim. Past, 13, 1007–1022, 2017
https://doi.org/10.5194/cp-13-1007-2017
Clim. Past, 13, 1007–1022, 2017
https://doi.org/10.5194/cp-13-1007-2017

Research article 16 Aug 2017

Research article | 16 Aug 2017

Experiments based on blue intensity for reconstructing North Pacific temperatures along the Gulf of Alaska

Rob Wilson et al.

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Short summary
Blue intensity shows great potential for reconstructing past summer temperatures from conifer trees growing at high latitude or the treeline. However, conifer species that express a strong colour difference between the heartwood and sapwood can impart a long-term trend bias in the resultant reconstructions. Herein, we highlight this issue using eight mountain hemlock sites across the Gulf of Alaska and explore how a non-biased reconstruction of past temperature could be derived using such data.